import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'
Vue.use(VueRouter)
// export default 
const router=new VueRouter({

  routes:[
    {path:'/',redirect:'/login'},
    {path:'/login',component:Login},
    {path:'/home',component:Home}
  ]

})
//挂载路由函数
router.beforeEach((to, from, next) => {
  /* must call `next` */
  //to将要访问的路径from 从哪个路径跳转过来
  // next()放行 next('/path')强制跳转
  if (to.path=='/login') return next();
  //获取token
  const tokenstr=window.sessionStorage.getItem('token')
  if(!tokenstr) return next('/login')
  next()
})
export default router
